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• Artificial lift
  ...pump and motor combination is run in the well on the bottom of the tubing string and is set below the operating fluid level in the well ([[:file:artificial- ...c motor is powered by an electric cable strapped to the side of the tubing string. Lift capacity for each pump is adjusted by changing the number of stages i
  7 KB (1,094 words) - 20:47, 19 January 2022
• Fishing
  ...nt, especially pumps, which allows the hole to cave in and stick the drill string. * Twist-offs resulting from a stuck drill string being rotated until the pipe shears above the sticking point.
  8 KB (1,156 words) - 21:19, 19 January 2022
• Total measured length
  ...lengths of individual joints of drill pipe, drill collars, and other drill-string components.
  1 KB (186 words) - 19:53, 3 March 2016
• Land rigs
  ...sed to convey the rotary movement to the drill string and bit. The ''drill string'' refers to the combination of drill pipe, collars, and other bottom hole a ...ort'' or ''wiper trip''. Such trips are performed to verify that the drill string can move through a recently drilled potentially troublesome section of the
  12 KB (2,020 words) - 16:19, 20 January 2022
• Offshore rigs
  * The [http://www-odp.tamu.edu/publications/tnotes/tn31/pdf/drill_s.pdf drill string] and riser are isolated from wave motion by motion compensators. ...h is a reinforced hole in the bottom of the ship through which the [[drill string]] is raised and lowered ([[:file:offshore-rigs_fig4.png|Figure 4]]). The sh
  7 KB (1,016 words) - 16:56, 20 January 2022
• Rate of penetration
  ...to a part of the rig that moves in proportion to the movement of the drill string. Common attachment points are the drill line, drawworks drum, or crown shea ...n surface responses to the performance of the drill bit. Because the drill string stretches in proportion to the weight on bit (WOB), highly sensitive ROP lo
  7 KB (1,049 words) - 19:02, 20 January 2022
• Sampling for paleontology
  ...rill cuttings is collected for each joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m) and represents an amalgamated sampl ...into 30-ft (9-m) intervals for each joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m). However, the geologist can specify
  7 KB (1,051 words) - 18:08, 24 January 2022
• Drill stem testing
  ...-stem-testing_fig1.png|200px|thumb|{{figure number|1}}Drill stem test tool string.]] ...program. The anticipated reservoir properties are used to design the test string and test times so that the best, most useable data can be obtained.
  26 KB (4,009 words) - 15:09, 24 January 2022
• Surface production equipment
  ...head for each casing string, a tubing head, and a Christmas tree. For each string of pipe in the well, casing, or tubing, some means of support and pressure
  9 KB (1,343 words) - 18:42, 20 January 2022
• Glossary
  ;LTS:long tubing string ;STS:short tubing string
  5 KB (840 words) - 13:51, 18 March 2019
• Wellsite math
  ...er static conditions (that is, not circulating and/or not moving the drill string up or down) is a function of only two variables: ...r the negative pressure (swab) exerted on the hole when tripping the drill string.
  21 KB (3,142 words) - 15:10, 24 January 2022
• Conventional coring
  ...ivel assembly inside of an outer core barrel that is attached to the drill string, and a core bit ([[:file:conventional-coring_fig1.png|Figure 1]]). As menti The wireline core barrel allows drilling or coring without pulling the drill string. This reduces drilling costs by eliminating the need to [[trip]] pipe. The
  13 KB (1,885 words) - 20:49, 19 January 2022
• Wellbore trajectory
  ...it. The ''bottom hole assembly'', or ''BHA'', is that portion of the drill string closest to the drill bit. It consists of several components: ...the right,” is presumably due to right-hand rotation of the bit and drill string and is affected by inclination angle, rotary speed, weight on the bit, form
  14 KB (2,167 words) - 20:46, 19 January 2022
• AAPG Wiki:Converting content
  .../nowiki>''' tags and '''<nowiki><cjsXXXXX></nowiki>''' where XXXXX is some string making, for example, '''<nowiki><cjsauthor></nowiki>''', '''<nowiki><cjsye ...</code> &rarr; Article called <code><nowiki>Heading</nowiki></code> (use ''string.isupper()'' to decide)
  6 KB (826 words) - 18:27, 1 July 2013
• Production logging
  ...n as a combination on the same tool string. Results typical of such a tool string are shown in [[:file:production-logging_fig5.png|Figure 5]]. In this exampl
  12 KB (1,726 words) - 16:48, 20 January 2022
• Perforation design
  ...ed guns if the downhole tools may not be affected by the debris. If a work string is not necessary for perforation, and stimulation might not benefit from hi
  12 KB (1,786 words) - 21:02, 21 April 2022
• Drilling fluid
  * Cool and lubricate the bit and drill string * Add bouyancy to the drill string
  13 KB (1,866 words) - 21:17, 19 January 2022
• Preprocessing of logging data
  ...ifferential cable stretch. Stretch can be pronounced when the logging tool string sticks or temporally hangs up in the hole. All logging measurements must be
  13 KB (2,094 words) - 17:42, 18 January 2022
• Show evaluation
  ...when the bit is off-bottom and there is no vertical movement of the drill string. This reading results from the liberation of gases from the mud system or f ...h underbalance is due to the “swabbing” effect caused by pulling the drill string out of the hole.
  18 KB (2,670 words) - 18:21, 21 January 2022
• Formation fluid pressure from drill stem tests
  ...a pressure drop in the tool which sucks fluids into the tool and drillpipe string. Recovered volumes of oil, gas, water, or drilling mud are recorded.
  6 KB (997 words) - 17:55, 17 February 2022

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